Those DSP patches are included since kp48, excluding the last one which brings troubles.
last change Sat, 1 Oct 2011 21:31:54 +0000 shortlog 19 hours ago Pali Rohár Fixed copying kernel source to build directory in debia... master 19 hours ago Pali Rohár Update debian/changelog 19 hours ago Pali Rohár Add patch dspbridge_flushall.diff 19 hours ago Pali Rohár Add patch dspbridge_new_api.diff which bring support... 19 hours ago Pali Rohár DSS video memory is increased from 6 to 8 megabytes... 19 hours ago Pali Rohár Fixed patch radio-si4713.diff
I found what the problem is and will send new patch to pali.
Anyway KP49 is clearly marked as UNSTABLE and it is still even not in extras-devel. That should mean something, ain't it?
I am human too and make mistakes as all humans do, i.e. sh|t happens.
Anyway apologies to you and anyone else who has troubles with KP49 because of my last patch to DSP driver.
Raise your voltages (and reboot before trying again)